A 12V lamp, 36W is switched on for 1 hour. Find the energy supplied by the battery.
E = P*t = 36 * 3600 = 1.3 * 105 J
RA
Related Physics A Level answers
All answers ▸A ball of mass 0.7 kg strikes the wall at an angle of 90 degrees with speed 72 km/h. Consider that the bounce lasts for 0.1 s and is perfectly elastic. What is the magnitude of the average reaction force from the wall that acts on the ball?
If a wire loop moves at constant speed into a region where there is a magnetic field, why is a current induced in the wire?
A nucleus of the stable isotope Pb(208,82) has more neutrons than protons. Explain why there is this imbalance between proton and neutron numbers by referring to the forces that operate within the nucleus.
Name the four fundamental forces.